2014 Chevron Houston Marathon

January 17, 2014 |Houston Chronicle Photo Staff

Twin sisters Sue Jarvis and Kay Stewart shop for shoes during the Marathon Expo at the George R. Brown Convention Center on Friday, Jan. 17, 2014, in Houston. The sister will run the marathon together.

Mayra Beltran/Houston Chronicle

69of72

Twin sisters Sue Jarvis and Kay Stewart shop for shoes during the Marathon Expo at the George R. Brown Convention Center on Friday, Jan. 17, 2014, in Houston. The sister will run the marathon together.